What caused this?

I know this isn't a Mopar, but I don't want to make the same mistake when I paint my Mopars. Two years ago I painted my wife's Murano. It was the typical primer/sealer then base/clear. Everything looked good for a year and then last summer the paint on the roof and hood started to bubble and on the roof the clear even cracked. The sides of the car were only affected to a very minor degree.

When I started to sand the clear off of the roof the paint smelled like fresh paint at times. That could be my imagination though.

I have used the same paint and procedure on other cars and everything is good,

Anybody know what happened?

Jack

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Was the car covered with a car cover at anytime after a rain or wash and it was still wet. We had a guy cover his car with a car cover in the middle of a rain storm . He rolled the car into his trailer and a little later that is what happened to his car. The guy that sells us the paint said you can not cover a car when it is wet. Mark